We firmly believe one can never have enough workout apparel. Still, it can be a real struggle to find affordable and stylish activewear that checks all our boxes: comfortable, functional, and technical. So, we were excited to learn that Amazon is going to be dropping a few Prime Day deals early this year. In addition to up to 30% off intimates on July 13, the retailer is offering up to 40% off select activewear (including their exclusive Core 10 brand, which we love) on July 15. The Core 10 collection includes classic staples like your tried-and-true black capri, as well as edgier sports bras and leggings that are still supportive for your toughest workouts. While Prime Day doesn't *officially start until July 16*, you can shop these deals a day early. Here, our top picks—from bras and tops to leggings—that you won't want to miss.